MIL-DTL-38999 Series III Connectors

Amphenol MIL-DTL-38999 Series III Circular Connectors deliver high-performance capabilities for demanding general duty and harsh environment applications. Developed to operate under severe high temperature and vibration, the connectors feature rapid coupling via a Tri-Start™ thread, shell-to-shell, or metal-to-metal bottoming. Amphenol designed these connectors to provide an EMI shielding capability of 65dB minimum at 10GHz and corrosion resistance of up to 500-hour salt spray exposure. Amphenol MIL-DTL-38999 Series III Circular Connectors offer a rated current range of 1.5A to 5A, a temperature range of -65°C to +175°C, minimum insulation resistance of 5000MΩ, and a dielectric withstanding voltage of 1000VRMS. These rugged and highly reliable circular connectors are ideally suited for industrial, commercial air, military, C4ISR, and space applications.

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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Number of Positions
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Product
Shell Size
Shell Style
MIL Type
Termination Style
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Packaging
Amphenol Aerospace Circular MIL Spec Connector 66P Size 19 Wall Mount Receptacle
Datasheet
71In Stock
100Expected 9/29/2026
Min.: 1
Mult.: 1
No
66 Position Socket (Female) 19-35 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P FM SZ 21 PIN WL MNT
Datasheet
18In Stock
184On Order
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 21-11 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 16P FM SZ 21 PIN WL MNT
Datasheet
36In Stock
Min.: 1
Mult.: 1
16 Position Pin (Male) 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 41P FM SZ 21 PIN WL MNT
Datasheet
105In Stock
100Expected 10/23/2026
Min.: 1
Mult.: 1
41 Position Pin (Male) 21-41 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 41P RCPT SZ 21 SKT WL MNT
Datasheet
101In Stock
Min.: 1
Mult.: 1
No
41 Position Socket (Female) 21-41 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 4P FM SZ 21 SKT WL MNT
Datasheet
18In Stock
Min.: 1
Mult.: 1
No
4 Position Without Socket Contacts 21-75 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 21P SIZE 23 WALL MOUNT RECEPTACLE SKT
Datasheet
13In Stock
Min.: 1
Mult.: 1
No
21 Position Socket (Female) 23-21 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 53P FM SZ 23 SKT WL MNT
Datasheet
13In Stock
Min.: 1
Mult.: 1
53 Position Socket (Female) 23-53 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P FM SZ 23 SKT WL MNT
Datasheet
29In Stock
100Expected 10/27/2026
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 23-55 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector SIZE 9; 3 PIN CRIMP JAM NUT RECEPT
Datasheet
69In Stock
Min.: 1
Mult.: 1
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 13P RCPT SZ 11 SKT PNL MNT
Datasheet
22In Stock
100Expected 10/23/2026
Min.: 1
Mult.: 1
13 Position Socket (Female) 11-35 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P RCPT SZ 13 SKT PNL MNT
Datasheet
57In Stock
100Expected 11/9/2026
Min.: 1
Mult.: 1
8 Position Socket (Female) 13-08 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 37P SIZE 15 JAM NUT RECEPTACLE SKT
Datasheet
19In Stock
Min.: 1
Mult.: 1
37 Position Socket (Female) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 32P RCPT SZ 19 SKT PNL MNT
Datasheet
14In Stock
Min.: 1
Mult.: 1
32 Position Socket (Female) 19-32 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 41P FM SZ 21 PIN PNL MNT
Datasheet
91In Stock
Min.: 1
Mult.: 1
41 Position Pin (Male) 21-41 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 3P SZ 9 RCPT PNL MNT PIN
Datasheet
21In Stock
Min.: 1
Mult.: 1
No
3 Position Pin (Male) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P FM SZ 9 SKT PNL MNT
Datasheet
98In Stock
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum


Amphenol Aerospace Circular MIL Spec Connector TV 3C 3#20 SKT RCPT ALUMINUM
Datasheet
162In Stock
100Expected 10/23/2026
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 2P FM SZ 11 SKT PNL MNT
Datasheet
91In Stock
128On Order
Min.: 1
Mult.: 1
No
2 Position Socket (Female) 11-02 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 PANEL MOUNT PIN
Datasheet
98In Stock
Min.: 1
Mult.: 1
No
13 Position Pin (Male) 11-35 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 7P JAM NUT SOC SZ 11
Datasheet
50In Stock
100Expected 11/5/2026
Min.: 1
Mult.: 1
No
7 Position Socket (Female) 11-99 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P FM SZ 13 PIN PNL MNT
Datasheet
95In Stock
306On Order
Min.: 1
Mult.: 1
No
4 Position Pin (Male) 13-04 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 8P FM SZ 13 PIN PNL MNT
Datasheet
238In Stock
154Expected 10/6/2026
Min.: 1
Mult.: 1
No
8 Position Pin (Male) 13-08 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P RCPT SZ 13 SKT PNL MNT
Datasheet
46In Stock
71Expected 10/6/2026
Min.: 1
Mult.: 1
No
8 Position Socket (Female) 13-08 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 10P FM SZ 13 PIN PNL MNT
Datasheet
275In Stock
Min.: 1
Mult.: 1
No
10 Position Pin (Male) 13-98 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum